Chapter 6 Mechanical Properties of Matter || PCTB New Physics Book Solution
MCQS Questions 6.1 A wire is stretched by a weight \( w \). If the diameter of the wire is reduced to half of its previous value, the extension will become: (a) one half (b) double (c) one fourth (d) four times Correct Option: (d) four times Reason: Extension is inversely proportional to the square…